Here is a list of the websites where you can source free images. Images from these sites can be just as good as the paid for sites, but beware as they can sometimes be of low quality and watch out for the differing license’s and make sure you can indeed use the image in the way you need.
http://getrefe.tumblr.com/
Free, real life photos...
http://www.gratisography.com/
Free high-resolution pictures you can use on your personal and commercial projects. All pictures were photographed by Ryan McGuire and are free of copyright restrictions.
http://jaymantri.com/
"Free pics. Do anything (CC0). Make magic."
http://www.lifeofpix.com/
Free high-resolution photos, no copyright restrictions. Images for personal or commercial use… All images are donated to the public domain.
http://lockandstockphotos.com/
A completely free site with images released under the Creative Commons license. The site would like an attribute, but this isn’t vital.
http://nos.twnsnd.co/
Vintage photos from the public archives. Free of known copyright restrictions. Recapturing history.